Answer:
There are from 200-500 million alveoli (mean diameter = 200 micrometers) in adult human lungs
Explanation:
The epithelial cells of the alveolar septum are markedly thinned and the capillary network immediately beneath the epithelium is the richest in the body.hope this helps you :)
Answer:
The answer is alveoli
The essential difference between the knowledge level and the comprehension level of Bloom’s Taxonomy is that at the knowledge level one is asked to
Answer:
Explanation:
Knowledge it expected that an individual have the ability to recall some specific terms,facts,methods, processes, pattern, structure, or setting of a thing without necessarily understanding the concept.
Comprehension is the understanding an individual knows or get from what is being communicated and the ability to make use of the idea that is been communicated without seeing the full expression if it.
Comprehension is the explanation and understanding of knowledge i.e what is known and can be recalled.
DNA is transcribed to messenger RNA (mRNA), and the mRNA is translated to proteins on the ribosomes. A sequence of three nucleotides on an mRNA molecule is called a codon. As you can see in the table, most codons specify a particular amino acid to be added to the growing protein chain. In addition, one codon (shown in blue) codes for the amino acid methionine and functions as a "start" signal. Three codons (shown in red) do not code for amino acids, but instead function as "stop" signals.
Sort the following ten codons into one of the three bins, according to whether they code for a start codon, an in-sequence amino acid, or a stop codon
AUG, UAG, UAA, UGA, AAA, UGC, AUC, CAC, GCA, ACU
Answer:
start codon - AUG
in-sequence amino acid - AAA, UGC, AUC, CAC, GCA, ACU
stop codon - UAA, UAG, UGA
Explanation:
From the amino acid chart, the start codon is represented by the codon AUG which also code for the amino acid methionine. There are three stop codons including UAA, UAG, and UGA. The stop codons signal the end of the translation process of the mRNA. Every other codon within the mRNA chain codes for different amino acids except methionine.
Hence, using the attached amino acid chart:
start codon - AUG
in-sequence amino acid - AAA, UGC, AUC, CAC, GCA, ACU
stop codon - UAA, UAG, UGA
1) Smashing a phone
Gravitational force.
Frictional force.
Magnetic force.
Elastic force.
i don't know.
Answer:
Gravitational Force
Explanation:
When a phone is dropped, gravity is pulling it down towards the earths core, so in return the phone will be smashed when it hits the ground.
Answer:
FRICTIONAL FORCE.........
somebody help me please A cross is performed between a bird that is homo for red feathers and a bird that is homo for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. What proportion of the offspring from the second cross will be purple? 1 in 4 2 in 4 3 in 4 4 in 4
Answer:
2 in 4
Explanation:
Let PP are the gametes of red feather bird and pp are the gamete of blue feather bird. In the first cross they both will give purple feather bird because of incomplete dominance.
Consider Pp as the allele of purple offspring for the second cross. When two of the purple offspring are crossed, it will give the proportion of 2 in 4
F2: Pp X Pp
Offspring: PP, Pp,Pp, pp
So, only two offspring, Pp is with purple feathers while PP has red and pp has blue feathers.
Hence, the correct option is 2 in 4.
The proportion of the offspring from the second cross that would be purple will be 2 in 4.
Let us assume that the red feather color is controlled by allele A and that of blue feather color is controlled by allele B.
Homzygous red feather birds will have the genotype AA
Homzygous blue feather birds will have the genotype BB
Crossing the 2 birds:
AA x BB
AB AB AB AB
Thus, the purple offspring are AB.
Crossing 2 of the purple offspring:
AB x AB
AA AB AB BB
1 AA - red
2 AB - purple
1 BB - blue
Thus, 2/4 or 1/2 or 50% of the offspring from the second cross will be purple.
More on incomplete dominance can be found here: https://brainly.com/question/13402032
As a substance is eaten, trace its path through the digestive system. Include one of the basic processes each step of the way: digestion, absorption, motility, secretion, and excretion.
Answer:
....... motility
Explanation:
Bats have oversized ears, which help the bad you sound waves to detect the motion of their prey which example of the characteristics of life is most similar
This question is incomplete because there are no options; here is the complete question:
Bats have oversized ears, which help the bad you sound waves to detect the motion of their prey which example of the characteristics of life is most similar
A) A yeast cell splits itself in half to create a new organism.
B) A rat hides in its hole when it sees an approaching predator.
C) A fungal cell releases carbon dioxide back to the atmosphere.
D) A human child grows taller every year.
The answer to this question is B) A rat hides in its hole when it sees an approaching predator.
Explanation:
One of the characteristics of living organisms is the ability to adapt or respond to the environment. This feature of life is the one shown by bats in this case because the oversized ears are a result of evolution and adaptation that help bats to have more chances of survival. Similarly, rats hiding to avoid predators is a result of adaptation that helps rats survive by avoiding predators. Thus, rats and bat show the same characteristic of life.
Which process in the carbon cycle is
performed by BOTH plants and animals?
Cellular Respiration
Decomposition
Photosynthesis
Burning (combustion)
Question :
Which process in the carbon cycle is
Which process in the carbon cycle isperformed by BOTH plants and animals?
Answer:
Cellular Respiration
Decomposition
Photosynthesis ✔
Burning (combustion)
How is the mechanism of hearing different if the handle of the tuning fork is held on the mastoid process instead of holding the tuning fork tines near the ear canal?
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The sound enters the inner ear directly when it is held on the mastoid process, which is a change in the hearing mechanism. It is done for Rinne test.
What is a tuning fork?A tuning fork is a U-shaped metal object that has a handle of metal below it. It is used in hearing tests.
Thus, the difference in the mechanism of hearing when it is held on the mastoid process is the sound gets directly into the inner ear. It is done for the Rinne test.
Learn more about tuning fork
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#SPJ2
what was the dependent variable
Answer:
Dependent and independent variables are variables in mathematical modeling, statistical modeling and experimental sciences. Dependent variables receive this name because, in an experiment, their values are studied under the supposition or demand that they depend, by some law or rule, on the values of other variables.
Two species of hummingbird want the same flowers. This is an example of what kind of ecological pressure?
Answer:
COMPETITION MAYBE
I HOPE IT'S RIGHT IF NOT THEN SORRY HAVE A GREAT DAY :)What are micronutrients and why do we need them?
Explanation:
Micronutrients are one of the major groups of nutrients your body needs. They include vitamins and minerals. Vitamins are necessary for energy production, immune function, blood clotting and other functions. Meanwhile, minerals play an important role in growth, bone health, fluid balance and several other processes.
if my answer helps you than mark me as brainliest.. thanku
Use the following scenario to answer the next following question(s):
You and your friends go to the beach for vacation. You all walk down to the beach to go swimming. When you get there, you see the water is murky and green, and there are algae blooms floating on top.
Reference: Ref 6-3
If it is excess nutrients which are feeding the algae blooms and lowering the oxygen content in the water, that process is called:
A. nutrient cycling.
B. nitrification.
C. eutrophication.
D. hypoxia.
Answer:
eutrophication
Explanation:
Eutrophication refers to a situation in which the aquatic environment becomes excessively enriched with nutrients. This leads to algal blooms in aquatic habitats such as lakes. These nutrients come from Fertilisers used in farming, which find their way into water bodies through run-off thereby increasing nutrient levels.
Excess nutrients causes phytoplankton to grow and reproduce at an alarming rate resulting in algal blooms. This bloom disrupts the balance in the ecosystem leading to many problems.
The algae may end up using all the oxygen in the water, causing oxygen shortage for aquatic life. Some of the algae may die, their decay may lead to further oxygen depletion. As oxygen is depleted, aquatic organisms may also begin to die.
Carbon first enters the food web in Multiple Choice humans. vertebrates. invertebrates. green plants. soil bacteria
Answer:
Green Plants
Explanation:
Carbon enters all food webs, both terrestrial and aquatic, through autotrophs, or self-feeders.
Place the respiratory structures into the order that air would pass through them during a normal inspiration.
Outside of Body
1. nares
2. vestibule
3. nasal cavity
4. choanae
5. nasopharynx
6. oropharynx
7. laryngopharynx
8. larynx
Inside of Body
Answer:
Outside of the body, nares, vestibule, nasal cavity, choanae, nasopharynx, oropharynx, laryngopharynx, and larynx.
Explanation:
During inspiration, the air enters through the nares in the nose. From here, it goes up passing through the vestibule, the nasal cavity, and the choanae to start descending through the pharynx. The pharynx has three parts: the nasopharynx, which is in contact with the nose; the oropharynx that is in contact with the mouth; and the laryngopharynx, which is in contact with the larynx and esophagus. Between the oropharynx and laryngopharynx is the epiglottis, this is cartilage that prevents food from going to the lungs when we swallow food. After passing through the pharynx, the air flows through the larynx. From here, the air goes to the trachea, the bronchi, which enters the lungs giving the bronchioles, and these divide giving the alveolus, which is the place where the exchange of Oxygen and Carbon dioxide occurs.
Placing the respiratory structures in the correct order :
Outside of Body --> nares --> vestibule --> nasal cavity --> choanae --> nasopharynx --> oropharynx --> laryngopharynx --> larynx -- > inside of body
During respiration the air enters from outside of the body into the body through the nares down to the vestibule, the nasal cavity which will descend down through to the pharynx which is further divided into three ( 3 ) parts which are; nasopharynx, oropharynx, and laryngopharynx. The epiglottis is located between oropharynx and laryngopharynx.
Hence we can conclude that Placing the respiratory structures in the correct order ; Outside of Body --> nares --> vestibule --> nasal cavity --> choanae --> nasopharynx --> oropharynx --> laryngopharynx --> larynx
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Which of the following is NOT a prokaryote?
A. E. Coli
B. Fungi
C. Bacteria
D. Archaea
Answer:
Option B : FungiExplanation:
As,
Fungi is a eukaryote not a prokaryote
Which two layers are approximately the same age?
core sample 1
core sample 2
Complete question:
Examine the following diagrams. Columns I and II contain rock layers A, B, C, D, E, and F. Both columns were taken from the same dig site at different locations. Which two layers are of approximately the same age? (Note: The diagrams are attached).
Answer:
C and D
Explanation:
Layers C and D apparently contain the same fossilized organisms in the same substrate. Their appearance is very similar. By knowing that certain organisms used to live in a certain period of time, if we find two strata that show the same fossilized organisms, then we can estimate that these two strata are the same age. Fossilized organisms are used to estimate the age of a rocky stratum.
Life history can be illustrated through fossilized organisms trapped or converted into rocks. These fossils are known as index or guide fossils, of animal or vegetal nature, and they can apport information about the rocky stratum in which they are located or incrusted. These fossils are used to determine the age of the rocky sediments or the environmental conditions under which they were deposited.
Answer:both of them are
Explanation:
Explain why you selected the location recorded in Panel 1 as the ideal incubation site for culturing microbes?
Answer:
Due to optimum environment for microbes.
Explanation:
I selected Panel 1 as the ideal incubation site for culturing microbes because the environmental conditions such as temperature, humidity and nutrients medium etc are optimum. Microbes need a specific environmental conditions for its growth and development. If the environmental conditions are not suitable so it adversely affected the growth and development of microbes.
You decide to focus first on Mutation 1 and Mutation 2.
The F' plasmid appears to "rescue" mutant strain 1 by restoring wild-type inducible expression.
The F' plasmid does not change the phenotype of mutant strain 2; there is still no expression of the lac operon.
There are three possible mutations that could lead to lack of expression: a super-repressor (Is), a promoter mutation (P-) or a mutation in the lacZ gene (Z- ). To determine the effect of introducing a wild-type F' plasmid into a bacterial cell with each of these mutations, you draw out the three possible scenarios.
F' l+ cap+
Determine the expression of the lac operon for each possible partial diploid and for the "unknown" mutation partial diploids (Mutation 1 and Mutation 2).
1. F' lac+/ ts
2. F' lac+/ P
3. F' lac+/ Z
4. F' lac+/ Mutation 1
5. F lac+/ Mutation 2
A. Inducible (wild type)
B. No expression (mutant)
Answer:
Super-repressor (Is) - Uninducible dominant
Binding region is modified by the protein called repressor which prevents the lactose to bind with it. Thus, even the lactose is present the repressor protein is bound to the promoter and can not be detach from it. Transcription is not inducible.
Promoter mutation (P)- - Uninducible recessive
Mutated promoter region inhibits the binding of RNA polymerase that leads to trranscription.
The lacZ gene ( Z-) is mutated - recessive while the normal LacZ gene (Z +) - dominant .
Inducible (Wild type) No expression (Mutant)
F' lac+/ Is No Yes
F' lac + / P- Yes No
F' lac + / Z- Yes No
F' lac +/ Mutation1 Yes No
F' lac+ / Mutation2 No Yes
Mutation 1 and F' plasmid - Inducible wild type
Mutation 2 and F' plasmid - Mutant no expression
The idea that chromosomes orient themeselves randomly during metaphase I is ________________________. This leads to ___________________ combinations of genes.
Answer:
The idea that chromosomes orient themselves randomly during metaphase I is Independent Assortment. This leads to more combinations of genes.
Explanation:
During metaphase I, the pair of chromosomes align in the plate of the cell. In this step, the independent assortment takes place.
The independent assortment is the distribution of different genes into two gametes, is independent, because the distribution of the different genes, does not influence the distribution of the other genes. The independent assortment leads to new combinations of genes from the parental and maternal side, resulting in offsprings that do not look exactly like their parents.
Which is/are possible genotypes for a person with straight little finger and brown eyes?
a. bbrr
b. bbRR
c. BbRr
d. bbRr
Answer:
The correct answer is b. bbRR.
Explanation:
Brown eyes color is dominant over blue eyes color. So, we can assign the letter R to the dominant allele that expresses brown eyes and r to the recessive allele that expresses the blue eyes. The phenotype bent little finger is dominant over the phenotype straight little finger. We can assign the letter B to the dominant allele, and b to the recessive allele.a. bbrr : This genotype belongs to a person with blue eyes and straight little finger
b. bbRR : This genotype belongs to a person with brown eyes and straight little finger
c. BbRr : This genotype belongs to a person with brown eyes and bent little finger
d. bbRr: This genotype belongs to a person with brown eyes and straight little finger.
in the krebs cycle,
a. pyruvate is broken down into Co2 molecules
b. glucose is broken down into NADH and CO2
c. Co2 is concerted in pyruvate and O2
d. NADH and CO2 are converted into ATP
Answer:
a. pyruvate is broken down into Co2 molecules
Explanation:
Krebs cycle is also known as Citric Acid Cycle, in which pyruvate formed during the glycolytic is broken down into Carbon Dioxide (CO2) and Water (H2O).
Each pyruvate molecule is broken down into carbon atom which releases carbon dioxide.
Hence, the correct answer is "a. pyruvate is broken down into Co2 molecules".
What is Ependymal cell?
Answer:
Explanation: Ependymal cell is a type of neuronal support cell the forms the epithelial lining of the brain ventricles in the brain and the central canal of the spinal cord ependymal cells similar to all other neuroglia, are derived from a layer of embryonic tissue known as neuroectoderm.
Ependymal cells are ciliated-epithelial glial cells. It develops from radial glia alongside the surface of the ventricles of the brain and spinal canal.
What is the function of Ependymal cells?The main role of Ependymal cells is formation of CSF.
The CSF refers to cerebrospinal fluid. It is done by movement of sodium ion, chlorine ion and bicarbonate ion from blood to ventricles of brain.
Inside ventricles of the brain, collection of ependymal cells and capillaries together i.e., the tela choroidea form choroid plexus, which produces the CSF.
Thus, Ependymal cells are involved in formation of CSF.
For more details regarding Ependymal cells, visit:
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HELP!!! Plato Biology closed out and all I had left was Final. Anyone have examples of the 50 questions so I can study
Answer:
Explanation:
Are gender traits completely a result of societal expectations?
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Are there nuclear reactions going on in our bodies?
Can humans ever directly see a photon?
Can I turn my cat into a diamond?
Do blind people dream in visual images?
Do Kirlian photographs show the soul of an organism?
Do koalas eat honey like other bears?
Do poppy seeds contain narcotics?
Does the human body contain minerals?
How can the heart be strong enough to pump blood up your legs against gravity?
How can we differentiate so many different foods if we can only taste four flavors on our tongue: sweet, bitter, sour, and salty?
How can we unlock the 90% of our brain that we never use?
How did doctors create my belly button?
How did evolution ever lead ostriches to hide their head in the sand when an enemy approaches?
How do I turn on more parts of my brain and get smarter?
How do nerves control every organ and function in the body?
How do trees give earth all its oxygen?
How does the outer layer of skin cells on my finger detect when I am touching an object?
How long before genetic sequencing is able to tell us exactly how our children will look and act?
How long does it take our eyes to fully adapt to darkness?
How much water can a camel store in its hump?
How strong does a non-toxic odor have to be before it damages your sense of smell?
Is human blood ever any color other than red?
Is ionizing radiation always harmful?
Is it completely random whether a baby is a boy or a girl?
What are the five senses of the human body?
What chemicals can make human tissue regenerate in seconds?
What is it about a full moon that makes people do crazy things and commit crimes?
What is it about red that makes bulls so angry?
When did humans stop evolving?
When do birds use their teeth?
Where in my body is the original cell from which I was formed?
Why are bats blind?
Why are human brains the biggest?
Why are red, yellow, and blue the primary colors in painting but computer screens use red, green, and blue?
Why are veins blue?
Why can only certain parts of the tongue taste sweet flavors? Is there an evolutionary benefit to this?
Why can you boil a frog without it jumping out to safety if you raise the temperature slowly?
Why can't color blind people see any colors?
Why did evolution create a chicken that lays so many unfertilized eggs when that is so wasteful?
Why do camera flashes make your eyes turn red?
Why do humans have an appendix even though it is unnecessary?
Why do my fingers absorb water and become wrinkled?
Why does chewing gum take seven years to digest?
Why does every cell in our body contain DNA?
Why does evolution always lead to more advanced species?
Why don't dogs sweat?
Why don't I burst cells in my rear when I sit down?
Why don't our eyeballs fill up with water when we swim?
Why don't trees freeze and burst in the winter like cold pipes?
Why have humans evolved to be taller over the last three hundred years?
Why will a mother bird abandon its chick if touched by a human?
A good
scientist is...
about the
world and its
mysteries,
and must
who
demands
and willing to
change if need
be, and does
not let
and thoughtful
in proposing
carefully.
before accepting
explanations.
or personal
point of view
influence them.
and designing
experiments.
Explanation:
I don't understand the question
The Calvin Cycle can best be described as which type of reaction?
Answer:
In plants, carbon dioxide (CO2) enters the chloroplast through the stomata and diffuses into the stroma of the chloroplast—the site of the Calvin cycle reactions where sugar is synthesized. ... This type of reaction is called a reduction reaction, because it involves the gain of electrons.
Which of the following correctly describes the order of events occurring during a sympathetic nervous system response?
Answer:
Stimulation of thoracic or lumbar spinal regions; impulse reaches chain ganglion; acetylcholine release
Explanation:
What energy yield (in molecules of ATPATP per molecule of monosaccharide) would you predict for the bacterial catabolism of raffinose, a trisaccharide
Answer:
The correct answer is 2.67 ATP per molecule.
Explanation:
With the help of sucrose, it comes to known that the dissociation of a sugar-sugar bond generates one phosphorylated monosaccharide. Therefore, raffinose, which is a trisaccharide exhibits bonds of two sugar-sugar molecules. Post dissociation, they will generate one regular monosaccharide and two phosphorylated monosaccharides.
There will be the generation of net ATPs by each phosphorylated monosaccharide as they are already phosphorylated. While the regular monosaccharide, which is first needed to get phosphorylated will only produce two ATPs. Thus, a total of 8 ATPs will be produced by one molecule of raffinose. After dividing by three monosaccharides, the molecule will produce 8/3 = 2.67 ATPs per monosaccharide.
4
THE EAR
4.1
4.1.1 Which ONE of the following is a part of the ear where grommets
are inserted?
A Oval window
B Semi-circular canal
C Tympanic membrane
Pinna
noreen with middle ear infection is usually advised not to fly in an
Answer:
C
Explanation:
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If brown eyes are recessive to blue eyes, then which of the following would represent a mouse with brown eyes?
1.) ee
2.) EE
3.) Ee
4.) eE
Answer:
ee
Explanation:
ee is recessive
When does facilitated diffusion occur?
-When one liquid has a higher osmotic pressure than the other.
-When certain large molecules are unable to move through the membrane
without the help of channel proteins.
-When ATP is available to assist in moving molecules.
-When there's a strong membrane potential present, with the inside of the cell
being more negative than the outside of the cell.
Answer:
When certain large molecules are unable to move through the membrane without the help of channel proteins
Explanation:
Facilitated diffusion occurs when large molecules that are unable to pass through a membrane on their own make use of channel proteins to move from one side of the membrane to the other. Facilitated diffusion can occur when a liquid on one side of a membrane has a higher osmotic pressure than a liquid on the other side of the membrane, but it isn’t a required feature of facilitated diffusion. Similarly, facilitated diffusion can occur when there’s a large membrane potential present, but it isn’t a required feature of facilitated diffusion. Facilitated diffusion doesn’t require the use of energy, so the presence of ATP is irrelevant to facilitated diffusion occurring.